Wall and culvert mold.



C D. McA-RTHURr WALL AND CULVERT MOLD.

APPLICATION FlL ED APR-22, 1914.

Patented Feb. 15

IN VENTOR 4 QGVW W UNITED STATES PATENT OFFICE.

CHARLES D. MCARTHUR, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 BLAW STEEL CONSTRUCTION COMPANY, NEW JERSEY.

OF HOBOKEN, PENNSYLVANIA, A CORPORATION OF WALL AND CULVERT MOLD.

V Specification of Letters Patent.

Patented Feb. 15 1916.

Application filed April 22, 1914. Serial No. 833,619.

To all whom it may concern:

Be it known that I, CHARLES D. MCAR- THUR, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Wall and Culvert Molds, of which the following is a specification.

The invention relates to wall and culvert molds for use in the construction of concrete walls and culverts which may be of various shapes and sizes, and has for its principal object the provision of a cheap and simple construction which may be readily assembled in the field and disassembled and carried to other locations; and the provision of a construction possessing great strength and which is comparatively light and easy to handle. One embodiment of the invention is illustrated in the accompanying drawings, wherein Fig. 1 is a perspective view showing the wall portion of a culvert mold; Fig. 2 is a partial transverse section of a culvert mold; Fig. 3 is a section on the line III-III of Fig. 2, and Fig. 4 is a section similar to Fig. 3, showing a modified form of clamp used in the construction.

The mold construction comprises a series of panels 1, each being made of a plate 2,

stiifened and supported at the ends by the; angles 3 and at the sides by the angles 4;

The end angles 3 are set back from the ends of the plates as shown in Figs. 3 and 4:, and the side angles 4.- are arranged flush with the side edges of the plates, so that when the panels are grouped to form a mold surface as shown in Figs. 1 and 2, the angles 4 will abut one another at the side edges of, the panels and the plates 2 will abut one another at the end edges thus providing a space 5, Figs. 1, 3 and 4 between the flanges of the angles 3 at the end of the plates.

\Vhen the panels 1 are thus assembled the flanges of the angles 4 are secured together by means of the bolts 6 coacting with the wedge pins T passing through the bolts Fig. 1. The wall panels are supported and stiffened by the column 8, preferably made of wood, one of such columns being located at each junction of the ends of the plates, in

the manner shown in Figs. 1 and 2. The

' columns 8 are incontact with-the flanges of clamps 9 and 9' single piece of flat iron pressed to the deof such clamp being inserted in the Space 5 between the flanges of the angles 3 and there bolted to the flanges by means of the bolts 10 made secure by the wedges 11. Bolts 10 also bind the ends of the panels securely together. The forked end of the clamp 9 straddles the colunm 8 which is securely clamped between the prongs of the fork by means of the bolts 12 inserted through the holes 13 provided in the prongs of the clamp. The clamps are drawn up tight against the columns by the wedges 14 passing through slots in the bolts.

Where it is desirable to use the rods 8 to assist in supporting the molds these may be secured in the space 5 between the flanges 4. It is sometimes desirable for the supporting 8, one end 9 column or member to be located at one side .of the point of junction of the end of the plates, and in this case a clamp member 9', Fig. 4 is provided having the end 9 formed at one side of the clamp and located on the inside flange instead of being located between the flanges of adjacent panels. The are both formed from a sired shape.

The ceiling mold for the culvert is formed of panels similar to the panels used in the wall mold, which are supported preferably by a wooden beam 15 clamped to the panels in the same manner as the wall panels are secured to the supporting column. The beam. 15 may be somewhat heavier than the supporting columns 8 and therefore a plurality of holes are provided in the clamps 9 to accommodate different widths of timbers. The support 15 is supported on the columns 8, the elevation of the ceiling mold being adjusted by means of the wedge blocks 16 interposed between them. After the concrete has set the mold is disassembled by knocking out the wedges 16 and letting the ceiling mold down from the concrete when it may be taken apart readily.

\Vhere the width of the culvert is such that a space 17 is formed between the side of a panel and the inner face of a wall panel, an angle plate 18 is used at the corner to bridge the gap. This plate is removed after the wall panels are taken down.

It is quite obvious-that'culverts of various shapes may be formed with this system of molds, it being only necessary to shape the panels to conform to .the desired culvert form and to secure and support them in a;

flanges rigid with the end edges out the two sets ofi panels,

but spaced apart a slight distance, a supporting beam extending longitudinally opposite the said flanges and clamps having their' inner ends secured between the opposing edges secured to the supporting beam.

2. In combination in a wall mold, a series of panels placed edge to edge with their end edges in substantial alinement, a second similar series of panels with their end edges abutting the end edges of the first set, flanges rigid with the end edges of the two sets of panels, but spaced apart a slight distance, a supporting beam extending longi tudinally opposite the said flanges, and forked clamps having their forked ends embracing and secured to the beam and their other ends lying between and secured to the said flanges.

3. In combination in a wall mold, a series of panels placed edge to edge with their end edges in substantial alinement, a second similar series of panels with their end edges abutting the end edges of the first set, flanges rigid with the end edges of the two sets of panels, but spaced apart a slight distance, a supporting beam extending longitudinally opposite the said flanges, and clamps having their inner ends secured between the opposing flanges and their outer edges secured to the supporting beam, the said panels being provided with flanges on their side edges against which the beam engage edges in substantial alinement, a second abutting flanges and their outer s 4. In combination in a wall mold, a series of panels placed edge to edge with their end the end edges of the first set, flanges rigid with the end edges of the two sets of panels, tance, a supporting beam extending longitu. dinally opposite the said flanges, and clamps having their inner ends secured detachably to the said opposing flanges and their outer edges secured detachably beam, the said panels being flanges on their side edges against which the beam engages holding the panels in alinement.

5. In combination in a .wall mold, a series of panels placed edge to edge with their end edges in substantial alinement, a second simila'r series of panels with their end edges abutting the end edges of the first set, flanges rigid with the end edges of thetwo sets of panels, but spaced apart a slight distance, a supporting beam extending longitudinally opposite ends secured to the said flanges and having their forked ends embracing the beam, and means lying to the rear of the beam for clamping the but spaced apart a slight dis-' the said flanges, forked I clamps having their inner to the supporting provided with sides of the forks against the sides of the beam.

6'. In combination in a Wall mold, a series of panels placed edge to edge with their end edges in substantial alinement, a second similar series of panels with their abutting the end edges of the first set, flanges rigid with the end edges of the two sets of panels, a supporting beam extending longitudinally opposite the said flanges, means for securing the beam to the said flanges, the side edges thereof with which the said end edges beam engages to hold the panels in aline-.

ment.

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses.

Witnesses JULIAN H. Knnme,

Ancnwoarn MARTIN.

and other flanges extending along CHARLES D. MQARTHIUR. r 

